Oral cavity CT shooting device for oral medicine

By combining automatic control components and rotation adjustment mechanisms, and utilizing the switching of physical properties of electromagnets and magnetohydrodynamics, automated head calibration of the oral CT imaging device is achieved, solving the problem of cumbersome manual calibration in existing technologies and improving imaging efficiency and image quality.

CN121647710APending Publication Date: 2026-03-13XIANGYA HOSPITAL CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-24
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing dental CT imaging devices require manual calibration of the patient's head position before imaging, which is cumbersome and has a low level of automation, making it difficult to provide a convenient calibration solution.

Method used

The system employs an automatic control component and a rotation adjustment mechanism, utilizing the physical properties of electromagnets and magnetohydrodynamics to switch and fix the position of the sliding rack. Combined with a delayed trigger switch and a calibration laser, it achieves automated adjustment and stable positioning of the patient's head.

Benefits of technology

It provides a conveniently adjustable head position calibration scheme, realizes the automated operation process of the oral CT imaging device, improves imaging efficiency and image quality, conforms to the curvature of the human mandible, and enhances imaging results.

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Abstract

The invention discloses an oral cavity CT shooting device for oral medicine. The oral cavity CT shooting device comprises an automatic regulation and control assembly, a rotation regulation mechanism, a CT supporting table, a CT scanner and a CT base. The invention belongs to the technical field of oral cavity CT. The time for adjusting the head of a patient can be set through the arrangement of the delay trigger switch, a circuit is closed after timing is finished, the position of the head of the patient is stabilized through calibration laser on the CT scanner and by rotating the adjusting plate and the elastic positioning plate, and CT shooting in the next step can be conveniently carried out; according to the scheme, the technical scheme of manually guiding the patient to calibrate the head position in the prior art is abandoned, and the technical scheme of dynamically adjusting the head position of the patient and delaying stopping is provided, so that a standardized head position calibration operation process can be provided for the oral CT shooting device; and a head position calibration scheme convenient to adjust and automatic experience are provided.
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Description

Technical Field

[0001] This invention belongs to the field of oral CT technology, specifically referring to an oral CT imaging device for oral medicine. Background Technology

[0002] Oral CT is indispensable in the diagnosis and treatment of oral diseases. It can provide three-dimensional imaging, which is clearer and more three-dimensional than oral X-rays. It can observe the structure of teeth, bones, nerves and other structures from different angles, showing subtle lesions and assisting doctors in preoperative planning and postoperative scientific evaluation.

[0003] Currently, oral CT imaging devices require patients to place their heads on a placement plate before imaging can be performed. In practice, medical staff need to guide the patient's head movement to ensure that the CT images are accurate. The current method involves placing the patient's head between two limiting plates and then using a laser to calibrate the head position. This calibration is slow and cumbersome. To address these shortcomings, a new oral CT imaging device for oral medicine is needed. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an oral CT imaging device for oral medicine, which effectively solves the problems of existing oral CT imaging devices having difficulty in providing convenient adjustment calibration schemes and having low levels of automation.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides an oral CT imaging device for oral medicine, including an automatic control component, a rotation adjustment mechanism, a CT support platform, a CT scanner and a CT base. The CT support platform is disposed on the CT base, and a main body shell is disposed on the CT support platform. The CT scanner is disposed on the main body shell, and the rotation adjustment mechanism is disposed on the CT support platform. The automatic control component is drivenly connected to the rotation adjustment mechanism.

[0006] Preferably, the automatic control component includes a first sliding rack, a second sliding rack, a first sliding rack housing, and a second sliding rack housing. The first sliding rack housing is mounted on the rotation adjustment mechanism, and the second sliding rack housing is mounted on the rotation adjustment mechanism. Both the first and second sliding rack housings have sliding grooves. The first sliding rack is slidably fitted into the sliding groove of the first sliding rack housing, and the second sliding rack is slidably fitted into the sliding groove of the second sliding rack housing. Limiting plates are provided on the top outer sides of the first and second sliding rack housings for limiting the movement of the first and second sliding racks.

[0007] Furthermore, a touch switch is embedded in the inner wall of the rack sliding housing. The rack slides and contacts the touch switch. The gap between the rack and the rack sliding housing is filled with a magnetic fluid. An electromagnet is embedded in the side wall of the rack sliding housing. The switching of the magnetic fluid between a solid-like substance and a fluid is controlled by the on / off state of the electromagnet, thereby fixing the position of the rack.

[0008] The inner wall of the rack sliding housing is embedded with a touch switch. When the rack slides, it contacts the touch switch. The gap between the rack and the rack sliding housing is filled with a magnetic fluid. An electromagnet is embedded in the side wall of the rack sliding housing. The switching of the magnetic fluid between a solid-like substance and a fluid is controlled by the on / off state of the electromagnet, thereby fixing the position of the rack.

[0009] Preferably, touch switch one and touch switch two are time-delayed trigger switches.

[0010] Preferably, touch switch one is electrically connected to electromagnet one, and touch switch two is electrically connected to electromagnet two, so that the movement of sliding rack one and sliding rack two triggers electromagnet one and electromagnet two to work.

[0011] Furthermore, the rotation adjustment mechanism includes an adjustment gear one, an adjustment lever one, an adjustment lever two, a lever support frame one, a rotation adjustment plate, an adjustment plate support frame, and an adjustment mechanism base. The adjustment mechanism base is mounted on the CT support platform. The adjustment plate support frame is fixedly connected to the adjustment mechanism base. There are two sets of adjustment plate support frames. The rotation adjustment plate is rotatably positioned between the adjustment plate support frames. The lever support frame one is fixedly connected to the adjustment mechanism base. The adjustment lever one is hinged to the lever support frame one. One end of the adjustment lever two is hinged to the adjustment lever one, and the other end of the adjustment lever two is hinged to the bottom of the rotation adjustment plate. The adjustment gear one is rotatably positioned on the lever support frame one. The adjustment gear one is meshed with the sliding rack one. The rotation adjustment plate is equipped with an elastic positioning plate. The rotation adjustment plate conforms to the curvature of the human mandible, which can better fit the patient's mandible and improve the effect of CT imaging.

[0012] Furthermore, a rocker arm support frame 2 is fixedly provided on the base of the adjustment mechanism, an adjustment gear 2 is rotatably provided on the rocker arm support frame 2, an adjustment rocker arm 3 is hinged on the rocker arm support frame 2, an adjustment rocker arm 4 is hinged between the bottom of the rotating adjustment plate and the adjustment rocker arm 3, and the adjustment gear 2 is meshed with the sliding rack 2.

[0013] A spring is provided between sliding rack one and sliding rack two.

[0014] Furthermore, rack sliding housing one and rack sliding housing two are fixedly connected to the base of the adjustment mechanism.

[0015] In this solution, the components are made of materials that avoid affecting the quality of CT images, preferably carbon fiber composite materials, so as to avoid affecting the imaging quality of CT images. In this solution, Magnetofluid I, Electromagnet I, Magnetofluid II, and Electromagnet II are located below the rotating adjustment plate and are housed inside rack sliding housing I and rack sliding housing II, so as not to affect the imaging quality of CT images.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: This solution provides an oral CT imaging device for oral medicine, which effectively solves the problems of existing oral CT imaging devices having difficulty in providing conveniently adjustable calibration schemes and low levels of automation. This method brings the following advantages:

[0017] (1) This invention controls the switching of the physical properties of magnetorheological fluid one and magnetorheological fluid two between solid-like and fluid by switching on and off electromagnet one and electromagnet two, thereby fixing the position of sliding rack one and sliding rack two. The setting of the delay trigger switch can set the time for the patient's head adjustment. After the timing is completed, the circuit closes. During the timing period of the delay trigger switch, the device can help the patient automatically adjust to a suitable angle by using the calibration laser on the CT scanner. The patient's head position is stabilized by rotating the adjustment plate and the elastic positioning plate, which facilitates the next step of CT imaging. It provides a convenient head position calibration scheme.

[0018] (2) This solution abandons the existing technology of manually guiding patients to perform head position calibration and proposes a dynamic adjustment of patient head position - delayed stop technology, which can provide a standardized head position calibration operation process for oral CT imaging devices and provide an automated experience;

[0019] (3) The patient's oral cavity can be scanned by a CT scanner, which is convenient to operate;

[0020] (4) The rotating adjustment plate conforms to the curvature of the human mandible, which can better fit the patient's mandible and improve the effect of CT imaging. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an oral CT imaging device for oral medicine provided by the present invention;

[0022] Figure 2 This is a front view of an oral CT imaging device for oral medicine provided by the present invention;

[0023] Figure 3 A perspective view of the automatic control component and rotation adjustment mechanism provided by the present invention;

[0024] Figure 4A partial structural schematic diagram of the automatic control component and rotation adjustment mechanism provided by the present invention;

[0025] Figure 5 A perspective view of the automatic control component provided by the present invention;

[0026] Figure 6 for Figure 5 A magnified view of part A.

[0027] The components include: 1. Automatic control component; 2. Rotation adjustment mechanism; 3. CT support platform; 4. CT scanner; 5. CT base; 6. Main body shell; 7. Sliding rack one; 8. Sliding rack two; 9. Sliding rack shell one; 10. Sliding rack shell two; 11. Sliding groove; 12. Limiting plate; 13. Touch switch one; 14. Magnetofluid one; 15. Electromagnet one; 16. Touch switch two; 17. Magnetofluid two; 18. Electromagnet two; 19. Adjusting gear one; 20. Adjusting lever one; 21. Adjusting lever two; 22. Lever support frame one; 23. Rotation adjustment plate; 24. Adjusting plate support frame; 25. Adjustment mechanism base; 26. Elastic positioning plate; 27. Lever support frame two; 28. Adjusting gear two; 29. ​​Adjusting lever three; 30. Adjusting lever four; 31. Spring.

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] like Figures 1-2As shown, this invention provides an oral CT imaging device for oral medicine, including an automatic adjustment component 1, a rotation adjustment mechanism 2, a CT support platform 3, a CT scanner 4, and a CT base 5. The CT support platform 3 is mounted on the CT base 5, and a main body shell 6 is mounted on the CT support platform 3. The CT scanner 4 is mounted on the main body shell 6. The CT scanner 4 is used to perform CT imaging on the patient's oral cavity, which is convenient to operate. The rotation adjustment mechanism 2 is mounted on the CT support platform 3, and the automatic adjustment component 1 is connected to the rotation adjustment mechanism 2. This solution uses the automatic adjustment component 1 to help adjust the patient's head to a suitable angle, maintain the stability of the patient's head position, and facilitate the next step of CT imaging, providing a convenient head position calibration solution.

[0032] like Figure 1 , Figure 3 and Figure 5 As shown, the automatic control component 1 includes a sliding rack 7, a sliding rack 8, a rack sliding housing 9, and a rack sliding housing 10. The rack sliding housing 9 is mounted on the rotation adjustment mechanism 2, and the rack sliding housing 10 is also mounted on the rotation adjustment mechanism 2. Sliding grooves 11 are provided in both the rack sliding housing 9 and the rack sliding housing 10. The sliding rack 7 is slidably engaged in the sliding groove 11 of the rack sliding housing 9, and the sliding rack 8 is slidably engaged in the sliding groove 11 of the rack sliding housing 10. A limiting plate 12 is provided on the top outer side to limit the sliding rack 7 and the sliding rack 8. A touch switch 13 is embedded in the inner wall of the rack sliding housing 9. The sliding rack 7 contacts the touch switch 13 when sliding. The gap between the sliding rack 7 and the rack sliding housing 9 is filled with a magnetic fluid 14. An electromagnet 15 is embedded in the side wall of the rack sliding housing 9. The switching of the magnetic fluid 14 between solid-like and fluid properties is controlled by the on and off of the electromagnet 15, thereby fixing the position of the sliding rack 7.

[0033] like Figure 3 and Figure 6 As shown, a touch switch 16 is embedded in the inner wall of the rack sliding housing 2 10. The sliding rack 2 8 contacts the touch switch 2 16 when sliding. The gap between the sliding rack 2 8 and the rack sliding housing 2 10 is filled with a magnetic fluid 2 17. An electromagnet 2 18 is embedded in the side wall of the rack sliding housing 2 10. The switching of the magnetic fluid 2 17 between solid-like and fluid properties is controlled by the on and off of the electromagnet 2 18, thereby fixing the position of the sliding rack 2 8.

[0034] like Figure 3 , Figure 5 and Figure 6As shown, touch switch 13 and touch switch 26 are time-delayed trigger switches; touch switch 13 is electrically connected to electromagnet 15, and touch switch 26 is electrically connected to electromagnet 28, so that the movement of sliding rack 17 and sliding rack 28 triggers electromagnet 15 and electromagnet 28 to work; a spring 31 is provided between sliding rack 17 and sliding rack 28.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, the rotation adjustment mechanism 2 includes an adjustment gear 19, an adjustment lever 20, an adjustment lever 21, a lever support frame 22, a rotation adjustment plate 23, an adjustment plate support frame 24, and an adjustment mechanism base 25. The adjustment mechanism base 25 is mounted on the CT support platform 3. The adjustment plate support frame 24 is fixedly connected to the adjustment mechanism base 25. There are two sets of adjustment plate support frames 24. The rotation adjustment plate 23 is rotatably mounted between the adjustment plate support frames 24. The lever support frame 22 is fixedly connected to the adjustment mechanism base 25. The adjustment lever 20 is hinged to the lever support frame 22. One end of the adjustment lever 21 is hinged to the adjustment lever 20. On the 20, the other end of the adjusting lever 21 is hinged to the bottom of the rotating adjusting plate 23. The adjusting gear 19 is rotatably mounted on the lever support frame 22. The adjusting gear 19 is meshed with the sliding rack 7. The rotating adjusting plate 23 is provided with an elastic positioning plate 26. The base 25 of the adjusting mechanism is fixedly provided with the lever support frame 27. The adjusting gear 28 is rotatably mounted on the lever support frame 27. The adjusting lever 39 is hinged on the lever support frame 27. The bottom of the rotating adjusting plate 23 and the adjusting lever 39 are hinged together with the adjusting lever 40. The adjusting gear 28 is meshed with the sliding rack 28.

[0036] like Figure 3 and Figure 4 As shown, rack sliding housing 1 9 and rack sliding housing 2 10 are fixedly connected to the adjustment mechanism base 25.

[0037] like Figures 3-6 As shown, in this scheme, magnetorheological fluid 14, electromagnet 15, magnetorheological fluid 2 17, and electromagnet 2 18 are located below the rotating adjustment plate 23 and are housed inside the rack sliding housing 1 9 and rack sliding housing 2 10, which does not affect the imaging quality of CT images.

[0038] In practical use, the patient is guided to place their head between the two sets of elastic positioning plates 26, with their chin resting on the rotation adjustment plate 23. The patient is then guided to rotate their head to adjust the head angle. Sliding racks 7 and 8 slide smoothly, contacting touch switches 1 and 16. Since touch switches 1 and 16 are time-delayed trigger switches, the internal circuitry begins timing as soon as the patient starts rotating via the adjustment plate 23. After the timing ends, the internal circuitry closes, and the calibration laser on the CT scanner 4 is activated. Medical staff can then use this time to help the patient adjust to the appropriate angle. Electromagnets 15 and 18 discharge, causing magnetofluids 14 and 17 to transform from fluid to near-solid, fixing sliding racks 7 and 8. This prevents the adjustment gears 19 and 28 from rotating, thus allowing the adjustment lever to... Adjusting levers 20 and 29 cannot drive adjusting levers 21 and 30 to swing independently, thus fixing the position of the rotating adjusting plate 23. This, combined with the elastic positioning plate 26, stabilizes the patient's head position, facilitating subsequent CT imaging and providing a convenient head position calibration solution. This solution abandons the existing technology of manually guiding the patient's head for calibration, proposing a dynamic adjustment of the patient's head position with a delayed stop mechanism. This provides a standardized head position calibration procedure for oral CT imaging devices, offering an automated experience. The CT scanner 4 performs CT imaging of the patient's oral cavity, and the built-in display of the CT scanner 4 allows for evaluation of CT data and images, making operation convenient. After the imaging is completed, the patient's head is removed from between the elastic positioning plates 26, the internal circuitry is shut off, and the process is repeated for the next CT imaging, saving manpower.

[0039] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A dental CT imaging device for oral medicine, comprising a CT support platform (3), a CT scanner (4), and a CT base (5), wherein the CT support platform (3) is disposed on the CT base (5), a main body shell (6) is disposed on the CT support platform (3), and the CT scanner (4) is disposed on the main body shell (6), characterized in that: It also includes an automatic control component (1) and a rotation adjustment mechanism (2), wherein the rotation adjustment mechanism (2) is mounted on the CT support platform (3), and the automatic control component (1) is connected to the rotation adjustment mechanism (2) via a transmission.

2. The dental CT imaging device for oral medicine according to claim 1, characterized in that: The automatic control component (1) includes a sliding rack one (7), a sliding rack two (8), a rack sliding shell one (9) and a rack sliding shell two (10). The rack sliding shell one (9) is mounted on the rotation adjustment mechanism (2), and the rack sliding shell two (10) is mounted on the rotation adjustment mechanism (2). The rack sliding shell one (9) and the rack sliding shell two (10) are respectively provided with sliding grooves (11). The sliding rack one (7) is fitted and slidably mounted in the sliding groove (11) of the rack sliding shell one (9), and the sliding rack two (8) is fitted and slidably mounted in the sliding groove (11) of the rack sliding shell two (10). The top outer side of the rack sliding shell one (9) and the rack sliding shell two (10) is provided with a limiting plate (12).

3. The oral CT imaging device for oral medicine according to claim 2, characterized in that: A touch switch (13) is embedded in the inner wall of the rack sliding housing (9). The sliding rack (7) contacts the touch switch (13) when sliding. The gap between the sliding rack (7) and the rack sliding housing (9) is filled with a magnetic fluid (14). An electromagnet (15) is embedded in the side wall of the rack sliding housing (9).

4. The oral CT imaging device for oral medicine according to claim 3, characterized in that: Touch switch 2 (16) is embedded in the inner wall of the rack sliding housing 2 (10). The sliding rack 2 (8) contacts touch switch 2 (16) when sliding. The gap between the sliding rack 2 (8) and the rack sliding housing 2 (10) is filled with magnetic fluid 2 (17). Electromagnet 2 (18) is embedded in the side wall of the rack sliding housing 2 (10). Touch switch 1 (13) and touch switch 2 (16) are time-delayed trigger switches.

5. The oral CT imaging device for oral medicine according to claim 4, characterized in that: The first touch switch (13) is electrically connected to the first electromagnet (15), and the second touch switch (16) is electrically connected to the second electromagnet (18). Thus, the movement of the first sliding rack (7) and the second sliding rack (8) triggers the first electromagnet (15) and the second electromagnet (18) to work.

6. The oral CT imaging device for oral medicine according to claim 5, characterized in that: The rotation adjustment mechanism (2) includes an adjustment gear one (19), an adjustment lever one (20), an adjustment lever two (21), a lever support frame one (22), a rotation adjustment plate (23), an adjustment plate support frame (24), and an adjustment mechanism base (25). The adjustment mechanism base (25) is mounted on the CT support table (3). The adjustment plate support frame (24) is fixed to the adjustment mechanism base (25). There are two sets of adjustment plate support frames (24). The rotation adjustment plate (23) is rotatably mounted between the adjustment plate support frames (24). Support frame one (22) is fixed to the base (25) of the adjustment mechanism. The first adjustment swing rod (20) is hinged to the swing rod support frame one (22). One end of the second adjustment swing rod (21) is hinged to the first adjustment swing rod (20), and the other end of the second adjustment swing rod (21) is hinged to the bottom of the rotating adjustment plate (23). The first adjustment gear (19) is rotatably mounted on the first swing rod support frame one (22). The first adjustment gear (19) is meshed with the first sliding rack (7). The rotating adjustment plate (23) is provided with an elastic positioning plate (26).

7. The oral CT imaging device for oral medicine according to claim 6, characterized in that: The base (25) of the adjustment mechanism is fixedly provided with a swing arm support frame two (27), the swing arm support frame two (27) is rotatably provided with an adjustment gear two (28), the swing arm support frame two (27) is hinged with an adjustment swing arm three (29), the bottom of the rotating adjustment plate (23) and the adjustment swing arm three (29) are hinged with an adjustment swing arm four (30), and the adjustment gear two (28) is meshed with the sliding rack two (8).

8. The oral CT imaging device for oral medicine according to claim 7, characterized in that: A spring (31) is provided between the sliding rack one (7) and the sliding rack two (8).